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    • 4. 发明申请
    • System and Method for Inhibiting Hydrate Film Growth On Tubular Walls
    • 在管壁上抑制水合物膜生长的系统和方法
    • US20150260348A1
    • 2015-09-17
    • US14602987
    • 2015-01-22
    • Larry D. TalleyJason W. Lachance
    • Larry D. TalleyJason W. Lachance
    • F17D1/17F16L58/00
    • F17D1/17B01F5/0451B01F5/0473B01F5/0602C10L3/107F16L58/00Y10T137/2499
    • Methods and systems are provided for inhibiting the formation and/or growth of clathrate hydrates in a mixed phase fluid at or near the walls of a tubular through use of a chemical or physical coating on the tubular wall. An exemplary embodiment provides a method for producing a flowable mixed phase fluid having the potential to create clathrate hydrates. The method includes inhibiting hydrate formation in a tubular by injecting an additive into a fluid stream in the tubular, and the additive adheres, at least in part, to the walls of the tubular and inhibits hydrate growth proximate to the wall. When sufficient additive is injected into the tubular system, the hydrate film growth on the tubular walls is inhibited, at least to some extent, and a continuous flow rate is maintained.
    • 提供的方法和系统用于通过使用管状壁上的化学或物理涂层来抑制在管壁或其附近的混合相流体中的包合物水合物的形成和/或生长。 一个示例性实施方案提供了一种用于生产具有产生包合物水合物的潜力的可流动混合相流体的方法。 该方法包括通过将管道中的流体流注入添加剂来抑制管中的水合物形成,并且添加剂至少部分地粘附在管壁上并且抑制靠近壁的水合物生长。 当足够的添加剂注入到管状系统中时,管壁上的水合物膜的生长至少在一定程度上被抑制,并且保持连续的流速。
    • 5. 发明授权
    • Method for inhibiting hydrate formation
    • 抑制水合物形成的方法
    • US6107531A
    • 2000-08-22
    • US973110
    • 1998-01-06
    • Karla S. ColleChristine A. CostelloLarry D. TalleyRussell H. OelfkeEnock Berluche
    • Karla S. ColleChristine A. CostelloLarry D. TalleyRussell H. OelfkeEnock Berluche
    • C09K8/52C10L3/06C10L3/10F17D1/05C07C7/20
    • C09K8/52C10L3/06C10L3/10F17D1/05C09K2208/22Y10S585/95
    • A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents involves treating the fluid with an inhibitor comprising a substantially water soluble polymer having a polymer backbone .with a pendant C.sub.1 --C.sub.3 alkyl group; the polymer having an average molecular weight between about 1,000 and about 6,000,000. Preferably, the pendant alkyl group is a methyl group. The rate of nucleation, growth, and/or agglomeration of gas hydrate crystals in a petroleum fluid stream Is reduced using the alkylated polymer backbone inhibitor, thereby inhibiting the formation of a hydrate blockage in the pipe conveying the petroleum fluid stream. Test results are disclosed which unexpectedly show that alkylating the polymer backbone with a methyl group will produce a subcooling for the alkylated polymer that is at least about 2.degree. F. (about 1.1.degree. C.) greater than its nonalkylated counterpart. The inhibitor can be used conveniently at low concentrations, for example in the range of from about 0.01% to about 5% by weight of the water present in the oil or gas stream, to effectively treat a petroleum fluid having a water phase.
    • PCT No.PCT / US96 / 10003 Sec。 371日期:1998年1月6日 102(e)1998年1月6日PCT PCT 1996年6月7日PCT公布。 公开号WO96 / 41786 PCT。 日期:1996年12月27日一种用于抑制在具有水合物形成成分的流体中形成笼形水合物的方法包括用包含具有聚合物主链的基本上水溶性聚合物的抑制剂处理流体,其具有C1-C3烷基侧基; 该聚合物的平均分子量为约1,000至约6,000,000。 优选地,所述侧基烷基是甲基。 使用烷基化聚合物主链抑制剂减少石油流体流中气体水合物晶体的成核,生长和/或附聚的速率,由此抑制输送石油流体流的管道中的水合物阻塞的形成。 公开了测试结果,其意外地显示用甲基烷基化聚合物主链将产生比其非烷基化对应物大至少约2°F(约1.1℃)的烷基化聚合物的过冷却。 抑制剂可以以低浓度方便地使用,例如在油或气流中存在的水的约0.01重量%至约5重量%的范围内,以有效地处理具有水相的石油流体。